Constant potential apparatus



Patented Apr. 29, 1930 .resnrirBREWER; on iinw YORK, N.

\ KEY CASE Application Yfiled February 4, .1927A Serial No.' 165,329.

.i This invention `relates (toi key lcases oi' Athe typehavingindividualkeyv holders connected .with a carrierplate, thelatter piece attachedgto.afflexbleandftoldable cover adapted toeni by lthe key .hol-ders.

A,The prinqipal-object of the presentinven- 4tionisthe'provision of, akey'case of the indicated character, ywhich ienibodies novel struc-.iefturalfeatures-by virtue of which, .thekey holders'mayloe easilyand-practically .con- -nectedwithfthe carrier member; so lthateach ofthe' keyholderswillfbe swivellyaiid swingaoly connected to tlieerendthat the..keyscwill .15- be conveniently: accessible? when the Ioldable.-cover is ppened', andto keepitlie keys from be- `ingfbune-hedwhilethekey case is being rcarriedabout; soithat smallkeys may.belassecia-ted witlislarge-keys in a inail-ner toi/he.20-.easily-selected and 'so that 4identification and ...30 2 is similar,Viewillustrating the lblankshown.in 1 .iieadyor 5application tofthelexihlehfeldahle eover,M and :for the i association of the keyholdersand .indentilif Ycationmeans therewith. Y p A Eig; 31sasectionalviewtaken ,onthe line o.Eig ..2. and'il.luStratirrgg.'theaineniierl in which the key holders are connected.with the carrier plate; a key holder being shown in l vfull lines.about. toj loe-` brought .,intoithe posi- .tienfshown .in ,dotted lines1and before the .straight end, portionofthe'plate is brought l toitsfinal position.

.and .illustrating 4tliennanner Kin which differentsize `keys areheld.

Eig: 5,4 is..V a. view. looking. down. on fthe.. key (case with ithecover .shown open. in1 full flines i and: in its; overlapping xzlosedV.conditionI in dotted lines. i' i troni which the connector for seinekey holders is formed.

. Figis aisectional view taken on tli-eline Fig. 7 is afsectional viewtakenl on ,the line -7-.77 of Fig. 1.

.. Fig. 8 `is a'sectiona'l viewltakenon-tlie line y V11`ig59is, adetail-sectionalt'view on. an enlarged scaleftake'n onfthe line 9&9 ofFig.. 4.

f Fig. 9'EL is a sectional view taken ontlieline 9 9 of Fig. 9.

Fig.v 41() is a perspective view of thehlank Tlig. 11 is a sectionalview; ofthe connector .foi-ined ready for, use.

Fig. 12 is an elevation of a modified-form l 510i key holdercarrierplate.

:The lkey case ofthe present invention, generally stated consistslofacairier plate'preferaloly4 of metal: which isv attached to ailexibleand foldablelcover, ofleathei lcapable of enclosingfby beingy overlappedaround the carrier plategkey holders which are connected -With thecarrier plate, andeidentiiication means attached to the carrier plate;

'Referring now more patricularly-tofFigs illustrated a carrier plateOpreferably of nietalto give the necessary rigidity. Thisstantiallystraight vend portion 12, apertured lugs '13 slightly`loelowandto one sideofthe opening 11,- loendahle'side portions 14,atrans-Z verse opening 15, substantially L-shapedV -opeiiingsl providinginwardly;y projecting portions 17,y and holes 18. Thelugs 13 are bent`so; as to be disposed sidosta'ntiallyv at a right anglewith respect tothe plane of the if platelO. The side portions r14 are directed .Y (y.inwardly over the hodyof the plate. The Eig-4is anelevation of. thecomplete. key tcase with,v` thefilexible. .oldable cover open,f

endportion 12 will he bentforw-ardly and then rearwardly in effectingthe connection of the key holders with the carrierplate 10.

fspectively are detachably connected may be f diverselyformulated. butwill in each instance 1,2. and A3, itwillbe apparent that, there is i 2.A key case carrier plate having spaced elongated openings therein, andinturned side portions spaced With respect to one Jface of the plate,said side portions being disposed substantially perpendicular to theedges presented by said openings.

JOSEPH BREWER.

Apri129, 1930.

V. BUSH 1,756,628

CONSTANT POTENT IAL APPARATUS Filed OOL 5, 1925

